package com.nowcoder.community.event;

import com.alibaba.fastjson.JSONObject;
import com.nowcoder.community.entity.DiscussPost;
import com.nowcoder.community.entity.Event;
import com.nowcoder.community.entity.Message;
import com.nowcoder.community.service.DiscussPostService;
import com.nowcoder.community.service.ElasticsearchService;
import com.nowcoder.community.service.MessageService;
import com.nowcoder.community.util.CommunityConstant;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@Component
public class EventConsumer implements CommunityConstant {
    private static final Logger logger = LoggerFactory.getLogger(EventConsumer.class);

    @Autowired
    private MessageService messageService;
    @Autowired
    private DiscussPostService discussPostService;
    @Autowired
    private ElasticsearchService elasticsearchService;
    @Value("${wk.image.command}")
    private String wkImageCommand;

    @Value("${wk.image.storage}")
    private String wkImageStorage;


    @KafkaListener(topics = {TOPIC_COMMENT, TOPIC_LIKE, TOPIC_FOLLOW})
    public void handleCommentMessage(ConsumerRecord record){
        if (record == null || record.value() == null){
            logger.error("内容为空");
            return;
        }

        Event event = JSONObject.parseObject(record.value().toString(),Event.class);//解析接收的record
        if (event == null){
            logger.error("消息格式错误！");
            return;
        }
        //发送站内信息
        Message message = new Message();
        message.setFromId(SYSTEM_USER_ID);
        message.setToId(event.getEntityUserId());
        message.setConversationId(event.getTopic());
        message.setCreateTime(new Date());
        //封装消息内容 用户** 关注了您的帖子** 查看**
        Map<String,Object> content = new HashMap<>();
        content.put("userId",event.getUserId());
        content.put("entityType",event.getEntityType());
        content.put("entityId",event.getEntityId());

        if (!event.getData().isEmpty()){
            for (Map.Entry<String,Object> entry:event.getData().entrySet()){
                content.put(entry.getKey(),entry.getValue());
            }
        }
        message.setContent(JSONObject.toJSONString(content));
        //数据库保存站内信息
        messageService.addMessage(message);
    }
//消费发帖事件
    @KafkaListener(topics = {TOPIC_PUBLISH})
    public void handlePublishMessage(ConsumerRecord record) {

        if (record == null || record.value() == null) {
            logger.error("内容为空");
            return;
        }

        Event event = JSONObject.parseObject(record.value().toString(), Event.class);//解析接收的record
        if (event == null) {
            logger.error("消息格式错误！");
            return;
        }
        DiscussPost post = discussPostService.findDiscussPostById(event.getEntityId());
        elasticsearchService.saveDiscussPost(post);
    }
    //消费删帖事件
    @KafkaListener(topics = TOPIC_DELETE)
    public void handleDeleteMessage(ConsumerRecord record) {

        if (record == null || record.value() == null) {
            logger.error("内容为空");
            return;
        }

        Event event = JSONObject.parseObject(record.value().toString(), Event.class);//解析接收的record
        if (event == null) {
            logger.error("消息格式错误！");
            return;
        }
        elasticsearchService.deleteDiscussPost(event.getEntityId());
    }
    // 消费分享事件
@KafkaListener(topics = TOPIC_SHARE)
    public void handleShareMessage(ConsumerRecord record){

    if (record == null || record.value() == null) {
        logger.error("内容为空");
        return;
    }
    Event event = JSONObject.parseObject(record.value().toString(), Event.class);
    if (event == null) {
        logger.error("消息格式错误！");
        return;
    }

    String htmlUrl = (String) event.getData().get("htmlUrl");
    String fileName = (String) event.getData().get("fileName");
    String suffix = (String) event.getData().get("suffix");

    //拼出命令
    String cmd = wkImageCommand + " --quality 75 " + htmlUrl
            + " " + wkImageStorage +"/"+fileName + suffix;
    try {
        Runtime.getRuntime().exec(cmd);
        logger.info("生成长图成功：" + cmd);
    } catch (IOException e) {
        logger.error("生成长图失败" + e.getMessage());
    }

}


}
